How long does it take to beat Oblivion

it can take at the least for an expirienced gamer 10 mins if you are only talking about the main quest but if you do all the quests and you have done it before and you know how to do them all aproxemitly 336 hours i think but if you are using cheats on the computer version you can kill all the assassins before they kill the king so it can be like 1min for the main quest because the king can just give the amulet to his son but he doesn't so i would'NT do that so i hope all this helps!

It Could take like 5 minutes if you used paintbrushes...